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Finding the Fourth Proportional to 235,816.44, 325,432.50 and 128,392.32

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Solution

The fourth proportional to 235,816.44, 325,432.50 and 128,392.32 is: 177,184.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,816.44 : 325,432.50 = 128,392.32 : x
  2. Step 2: Convert to fraction form
    235,816.44/325,432.50 = 128,392.32/x
  3. Step 3: Cross multiply
    235,816.44x = 325,432.50 × 128,392.32
  4. Step 4: Simplify right side
    235,816.44x = 41,783,033,678.40
  5. Step 5: Solve for x
    x = 41,783,033,678.40/235,816.44
  6. Step 6: Final answer
    x = 177,184.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.